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- W2369881878 abstract "Assisted Global Positioning System provides an acquisition assistance,ephemeris,approx time and approx position for a A-GPS receiver through the cellular network base station to solve the weak signal positioning problem.The initial acquisition of tracking and decoding navigation message needs to go through its correlation lock,phase lock,and the bit synchronization and frame synchronization process,When the signal is very weak that cannot achieve frame synchronization and demodulation satellite TOW,the conventional algorithm cannot achieve positioning solution.The A-GPS fast positioning algorithm combined with Doppler positioning and reconstructing full pseudoranges method is presented,to reconstruct full pseudorange method to eliminate the common bias implied in integer millisecond pseudoranges.Doppler positioning solution guarantees to provide an initial position and time error less than 0.5lightms,so the A-GPS rapid positioning is completed in the coarse time and rough location condition." @default.
- W2369881878 created "2016-06-24" @default.
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- W2369881878 date "2015-01-01" @default.
- W2369881878 modified "2023-09-23" @default.
- W2369881878 title "Research on A-GPS rapid positioning algorithm using combined Doppler and code-phase measurements" @default.
- W2369881878 hasPublicationYear "2015" @default.
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